Disk mounting



Nov.1,193s. RHMITH'ELL ETAL 2,135,192

DISK MOUNTING lFiled Nov. 2e, 1937 2 sheets-sheet 1 @fw-f NOV- l, 1933-A R. H. MITCHELL z-rr AL 2,135,192

DISK MOUNTING Filed Nov. 26, 1937 2 Sheets-Sheet 2 Patented Nov. l, 1938 PATENT OFI-ice- 2,135,192r j msx MoUN'rmG Rollie H. Mitchell and `Oscar W. Sjogren, Huntington Park, and Edwin F.l Wadelton, LosL Angeles, Calif.,` assignors to Killefer Manufacturing Corporation, Los Angeles, Calif., a corporation of YCalifornia ApplicationNovember Z6, 193,7, Serial No. 176,564 y s claims. (ci. svp-zzo) This invention relates to disk mounting, and more particularly to.` the. mounting lof the disk blades in the frames of a disk harrow or like implement, so that the disks are supported upon tubular shafts journaled by an improved bearing means upon a fixed shaft or axle secured to the frame structure. n

It is an object of `this invention to provide an improved form of mounting forA ground working implements in a frame wherebythe ground working implements are supportedfupon an improved form of bearing means which is of simple ,construction and permits of the free running or rotation of the ground working implements, and wherein the bearing means provided are enclosed within a lubricantcontaining, dust-proof housing. v

' Another object of this invention is to provide van improved form of mounting for the concavoconvex disks of a disk harrowwherein the disk gangs are supported in spaced relation upon a tubular shaft, which shaft provides a housing for enclosing the bearing means whereby the tubular shaft is rotatably supported with relation to a iixed axle or shaft. v

Other objects and-advantages of this invention it is believed will be apparentr from thefollowing detailed description `ofl a preferred embodiment thereof as illustrated in the accompanying drawings.

In the drawings Figurel is a diagrammatic plan view of a sin gle frame of a disk harrow.

f Figure 2 is a sectional elevation takensubstan- `tially upon the line 2-12 of-Figure 1.

Figure 3 is an enlarged fragmental elevation of the left end of the structure as illustrated 1n Figure 2.

Figure 4 is a sectional view taken substantially on the line 4 4 of Figure 3. i

Figure 5 is a sectional view similar to Figure of the modified form of construction embodying our invention. Y

Figure 6 is a sectional view of a thirdvmodified orm of the disk mounting embodying our invent ion.

Figure '7 is an end sectional view taken substantially on the line 'I-'I of Figure 6. Y

In the drawings I indicates a frame which may be of any suitable or desirable construction within which ground working elements such, for example, as concavo-convex disks 2 are supported. The elements 2 are supported in spaced relation along a tubular shaft 3, which tubular shaft'a is journaledby spacedibearings 4 upon a rigid stationary shaft 5. 'Ihe elements are maintained inV spaced relation upon the tubular shaft v3 4by means of spacers 6, which spacers `6 are forrned with complementary interfitting ends 'I and 8 between which the elements 2 vare held. 'The ele-` ments 2 are formed as illustrated with square openings 9 intogwhich the square I0 of the end 8 ,passesin order to cause the elements 2 to rotate together with the tubular shaft 3. ,v The square I0 fits into a corresponding square openingl I formed in the ends ,'I.

An `end collar I 2 issecured to the tubular shaft 3 byany suitable or desirable means such, for example, as by welding thesame in position as indicated at I3. The collar `I2 -is formed in substantially the same manner asI the end 8 of one of the spacers Ii. A collar I4is mounted upon the tubular shaft 3 at the opposite end, andis held in position by means of a clamping nut I5 which is threaded to thetubular shaft 3 and locked in clamping position .by means of a lock nut' I6. Positioned within the tubular shaft 3 around the rigid shaft 5 are annular bearing stops I'I which are held in position by means of spot welding the same `to the tubular shaft 3 yas indicated at I8.

, Positioned adjacent the bearing stops I1 are the sleeve bearings 4 which are held in position of adjustment by meanaof the bearing adjustment collars I9 which are threaded to the rigid shaft 5 and held in positionof adjustment by kmeans of lock pins 20 which are'passed through the collars I9 and `rigid shaft 5. The adjustmentcollars I9 are fitted within the .tubular shaft` 3 and provide Aannular thrust rings 2| in vengagement with the ends of the sleeve bearings 4 for transmitting the end thrust imposed along the sleeve bearings 4 from the bearing 'stops I1 to the framezl. Y Y

v,The collars I9 are provided with a reduced polygonal section 22 which fits into openings `:formed in the'. frame I and the shoulders 23 thus provided at theend of this reduced polygonal section are held clamped to the` frame I by means. offnuts 24 threaded tothe rigid shaft 5 and held locked thereto by means of a washer 25 and nut lock 26. The end thrust transmitted` as'in the modification described is transmitted only to the frame at the left side of the assembly as viewed in Figure 2. y

O n the opposite end the assemblage of parts as previously 'described is the same but rmerely provides for maintaining the parts in'proper adjustment along the rigid shaft 4. i

In order to provide for a dust-proof assembly andforthe retention of lubricant within the tubular shaft 3, the collars I9 are fitted with lubricant-retaining means which include felt grease retainers 21 which are mounted upon the collars I9 adjacent to the annular thrust rings 2l. These felt retainers are maintained in positionv by means of an inside leather seal ring 28 which is fitted within the tubular shaft 3 and an outside leather retaining seal ring 29 which is fitted upon a collar I9l at the end of the tubulanshaft 3. In order that the inside of the tubular shaft may receive or may be substantially filled with lubricantif desired, a grease fitting 30 is provided. y

In the modified form of construction illustrated in Figure 5, similar parts are indicated with similar numerals with the addition of an exponent a thereto. In this modified form of our invention the structure is indicated as broken away lengthwise of the tubular .shaft 3 and includes three spaced bearing sleeves 4"V which are in this modification secured to the tubular shaft 38L by means of screws 3|* so that the bearing sleeves rotate with the tubular shaft 9*. 'I'he rigid shaft 5* may also be of tubular construction, as indicated. Mounted within the tubular shaft 3 are end thrust bearing rings 2 IlL which engage the ends of the outer sleeve bearings I and are held in position by means of the bearing adjustment collars I9* which fit Within the tubular shaft 3 and are threaded to the rigid shaft 5*. In this modification the collars I9* are provided with annular packing recesses 32* into Whichpacking felt 21 is fitted. The rigid shaft is secured to the frame I by means of nuts 24n which are threaded to the opposed ends of the shaft 5'l held in position by means of lock washers 25. The frame member IE` in this case is formed with an annular boss 3i!a drilled fto receive the end spacing collark 6l which is packed to the annular boss by means of packing 34* in order to provide for a dust-proof grease retaining housing for the bearings l* and 2l.

The collars I9'L are provided with the, reduced polygonal section 22* which fits within the corresponding polygonal recess formed in the frame member I.A As in the previous case, this modi- 'flcationof our invention is provided with means whereby the interior of the shaft 3l may 'be packed with grease, if desired.

VIn the modication of our invention, as illustrated in Figure 6, similar parts are indicated with similar numerals with theaddition of an exponent b thereto. This modification of our invention differs from those heretofore set forth principally in that it includeslor utilizes radial and end thrust roller bearings 4b in the place of the radial and Venci thrust bearings as set forth in connection withthe previous modifications of our invention. The radial and end thrust bearings in this modification are fitted upon the rigid shaft 5b at the respective ends of the assembly and engage shoulders I1b formed from the interior periphery of the tubular shaft 3b and end thrust washers 2Ih are interposed between the bearings 4b and` the bearing adjustment collars |91. The assembly of spacers 6b and disks 2h are retained upon the tubular shaft in substantially the same `manner except for the modified form of lock indicated at lib. In this modification of our invention the grease is provided to the interior of the shaft ilb by means of a greasev fitting 3l)b which is fitted to -the end of the rigid tubular shaft 5". In this modification of our invention we have illustrated the form of mounting the disks which includes two .shafts which are mounted in the single frame Ib in end to end relation, as is commonly utilized in disk harrow construction and have illustrated the fittings for the shafts or bearing mountings therefor to the frame Ib at the adjacent ends of the two shafts. The fittings for the outer ends of the shafts are the same as those illustrated for the inner ends of the shafts.

In this modification of our invention above described the disks 2b are locked to thespacer 6b ,so as to cause the disks 2b to rotate with the shaft 3b in exactly the same manner as set forth in the previous modification of our invention described except that in this case the inner ends of the endlspacing collar 6b are made with an annular recess IIbto receive the locking projection I IIby of the next adjacent spacingvspool 6b.

Having fully described our invention, it is to be understood that we do not wish to be limited to the details herein set forth, but our invention is of the full scope of the appended claims.

We claim:

1. In a ground working tool, the combination of a tubular shaft, a fixed shaft concentrically positioned within the tubular shaft, a frame, bearing stops positioned within the tubular shaft and spaced from theends thereof, a plurality of ground working elements, interlocking spaced elements mounted upon the tubular shaft having complementary engaging ends of non-circular form between which the ground working elements are secured-one of said elements being fixed to the tubular shaft at one end and clamping means secured to the shaft at the opposite end to lock the assembly of spacers and ground working elements to the tubular shaft, bearing means positioned within the tubular shaft at therespective ends thereof in engagement with the bearing stops, bearing adjustment collars threaded to the fixed shaft within the tubular shaft and providing frame-engaging means, means secured to the opposed ends of the fixed shaft for clamping the fixed shaft to the frame and to the collars, means for spraying lubricant to within the tubular shaft, and means at the ends of the tubular shaft for retaining the lubricant therein. 1

2. In a ground working tool,` the combination of a tubular shaft, a fixed shaft concentrically positioned within the tubular shaft, spaced bearing stops positioned within the tubular shaft and spaced from the ends thereof, a plurality of ground working elements mounted upon the tubular shaft, bearing means positioned within the tubular shaft 'at the respective ends thereof in engagement with the bearing stops, and bearing adjustment collars threaded to the fixed shaft within the tubular shaft.

3. In a ground working tool, the combination of a frame, a tubular shaft-I a fixed shaft, ground working velements mounted upon the tubular shaft, bearing elements interposed between the tubular shaft and the fixed shaft near the respective ends of the fixed shaft, stop means interposed between the tubular shaft and the nxed shaft to position the bearing means, and c ollar means threaded to the fixed shaft Within the tubular shaft, and means carriedupon the ends of the flxed shaft for clamping the frame to said collars.

4. In a ground working tool, vthe combination of a tubular shaft,4 a plurality of spaced disks mounted upon the tubular shaft, a fixed shaft concentrically positioned within the tubular,

shaft, bearings mounted at the opposed endsof asv 5. In a ground working tool, the combination of a tubular shaft, a plurality of spaced disks mounted upon the tubular shaft, a xed shaft concentrically positioned within the tubular shaft, bearings mounted at the opposed ends. of the tubular shaft, stop means within the tubular shaft for holding the bearings in spaced relation, bearing adjustment collars threaded to the xed shaft within the tubular shaft toy engage' the spaced bearings, means for holding the collars in adjusted position, and packing means carried by the collars within vthe tubular shaft to prevent foreign matter passing into the interior of the tubular shaft. t

6. In a ground working implement, the combination of a frame, a tubular shaft, a fixed shaft concentrically positioned within the tubular shaft, a plurality of ground working disks mounted in spaced relation upon the tubular.

shafts, bearing means mounted at the opposed end of the tubular shaft to rotatably support the tubular shaft with relation to the fixed shaft,fand bearing adjustment collars adjustably secured to thev fixed shaft within the tubular shaft, and means for clamping the frame to the bearing adjustment collars. j y

7. In a ground working tool, the combination of a tubular shaft, a iixed shaft concentrically positioned within the tubular shaft, ground working disks mounted in spaced relation along the length of the tubular shaft, bearing stop rings secured to the tubular shaft within' the interior thereof, sleeve bearing members mountedy upon the fixed shaft in engagement with the stop members and rotatably supporting the tubular shaft upon the fixed shaft, and adjustment collars threaded to the opposed ends of the xed shaft and extending within the tubular shaft into engagement with the ends of the sleevebearings, and packing means interposed between the bearing adjustment collars andthe tubular shaft kwithin the tubular shaft to prevent the admission with relation to the fixed shaft, and bearing adjustment collars threaded to the xed shaft to adjustthe position of the roller bearings upon the fixed shaft withrelation to stops provided upon v the tubular shaft, said adjustment collars extending into the tubular' shaft, and packing means mounted upon the adjustment collars within the tubular shaft to prevent the admissionof foreign matter into the interior of the tubular shaft.

ROILIE H. MITCHELL. oscAn w.` sJooREN. EDWIN F. WADELTON. 

